package com.hmall.item.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmall.item.mapper.ItemMapper;
import com.hmall.item.pojo.Item;
import com.hmall.item.service.IItemService;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class ItemService
        extends ServiceImpl<ItemMapper, Item>
        implements IItemService {
    @Autowired
    private RabbitTemplate rabbitTemplate;

    @Transactional
    @Override
    public void updateStatus(Long id,Integer status){
        // update tb_item set status = ? where id = ?
        this.update().set("status", status).eq("id", id).update();
        // 根据上下架判断RoutingKey
        String routingKey = status == 1 ? "item.up" : "item.down";
        // 发送消息
        rabbitTemplate.convertAndSend("item.topic", routingKey, id);
    }

}
